What is the scale of a model of a molecule if the model is 3 inches wide and the width of the actual molecule is 1/6,000 of an inch wide? A. 18,000:1

B. 2000:1

C. 1,800:1

D. 200:1

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12